Thermal study of chromium and molybdenum complexes with some nitrogen and nitrogen-oxygen donors ligands

Author: Soliman A   El-Medani S   Ali O  

Publisher: Springer Publishing Company

ISSN: 1388-6150

Source: Journal of Thermal Analysis and Calorimetry, Vol.83, Iss.2, 2006-02, pp. : 385-392

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

Previous Menu Next

Abstract

The complexes of chromium and molybdenum with salicylidene-2-aminophenol (shaH2), salicylidene-2-aminoanisole (salanH2), salicylidene-2-aminoaniline (salphenH2) and biquinoline (biq) were studied using the thermogravimetric techniques. The thermal decomposition of all complexes was found to be first order reaction and the thermodynamic parameters corresponding to the different decomposition steps were reported. Molybdenum complexes were found to be more thermally stable and the order of stability was [Mo(CO)4(biq)]>[MoO(salphen)]>[MoO2(salphenH)2]>[MoO4(salan)2]>[MoO(sha)]. Similar trend was found for chromium complexes where [Cr(CO)4(biq)]>[Cr(CO)2(salphen)] >[CrO2(CO)2(shaH2)]>[CrO2(CO)2(salan)2].

Related content